Synthesis and Characterization of the Dinuclear Polyhydrides [Os<sub>2</sub>H<sub>7</sub>(PPh<sup><i>i</i></sup>Pr<sub>2</sub>)<sub>4</sub>]<sup>+</sup> and [Os<sub>2</sub>H<sub>6</sub>(PPh<sup><i>i</i></sup>Pr<sub>2</sub>)<sub>4</sub>]
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The dinuclear osmium polyhydride [Os2H7(PPhiPr2)4][HC(SO2CF3)2] (1) was synthesized by the protonation of [OsH6(PPhiPr2)2] with bis(trifluoromethylsulfonyl)methane. Treatment with amine bases was not able to deprotonate 1, but reaction with potassium hydride gave the corresponding neutral polyhydride [Os2H6(PPhiPr2)4] (2). Single crystal X-ray diffraction revealed that 1 and 2 both crystallize in the P21/c space group and are classical polyhydrides containing similar Os(μ-H)3Os cores with Os−Os distances of 2.5431(1) Å and 2.5448(2) Å, respectively. These structures represent rare examples of dinuclear osmium polyhydrides with six or more hydride ligands.
创建时间：
2016-02-26
